/*
 * Copyright 2023 Bytedance Inc.
 *
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.bytedance.primus.common.util;

import java.io.Closeable;
import java.util.concurrent.locks.Lock;

public class LockUtils {

  public static LockWrapper lock(Lock... locks) {
    // NOTE: the order matters to prevent deadlocks
    for (Lock lock : locks) {
      lock.lock();
    }
    return new LockWrapper(locks);
  }

  public static class LockWrapper implements Closeable {

    private final Lock[] locks;

    private LockWrapper(Lock[] locks) {
      this.locks = locks;
    }

    @Override
    public void close() {
      // NOTE: the order matters to prevent deadlocks
      for (Lock lock : locks) {
        lock.unlock();
      }
    }
  }
}
